<template>
  <div>
    <!-- 面包屑-->
    <el-breadcrumb separator-class='el-icon-arrow-right'>
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-divider></el-divider>
    <el-card>
      <div id='echarts'></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts'
import _ from 'lodash'

export default {
  name: 'Report',
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {
    // Vue实例被创建，调用created函数
  },
  async mounted() {
    // 页面DOM元素已经加载完成，调用mounted函数
    var myEchart = echarts.init(document.getElementById('echarts'))

    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$msg.error('获取统计图表数据失败')
    }
    const result = _.merge(res.data, this.options)
    myEchart.setOption(result)
  },
  methods: {}
}
</script>

<style lang='less' scoped>
#echarts {
  width: 100%;
  height: 500px;
}
</style>
